[mdlug] SSH-from-laptop issues

[David Lee Lambert]

As I mentioned at the meeting today,  I've been having trouble connecting to a 
certain computer from my laptop when I'm at my dad's house.  My laptop is a 
Linux system running kernel 2.6.14.5, and I'm trying to connect to my system 
at home,  Linux, running kernel 2.6.x.  My dad has a Wow! cable-modem 
connection with a Belkin FD5231-4 hardware firewall/4-port switch between it 
and the network.  The Linux system I'm trying to connect to is connected 
directly to a Comcast cable-mode,  and has a domain-name provided by 
dyndns.org.  Among other systems,  my dad has a Windows XP box with Cygwin 
SSH and Internet Explorer.

I can log in via SSH,  and view the Apache website on my server,  from my 
dad's Windows XP box.  I cannot do either thing from my laptop while 
connected to my dad's network.  I can access every other website I can think 
of (yahoo,  Wayne State, slashdot...)  

I checked the logs on the Belkin firewall,  and didn't see anything relating 
to my laptop's IP address.  I saw something about a "SYN flood attack" from 
an internal dynamic DHCP address (probably my sister's laptop) with a date a 
couple weeks ago.  

I can run TCPdump on my laptop.  I don't see the traffic to/from the XP box,  
because it's on a different port of the switch.  Here's what I see if I run 
ssh and wait a couple of seconds:

17:34:25.821116 IP 192.168.0.7.50009 > mail.wayne.edu.imaps: . ack 509593 win 
32767
17:34:47.419039 IP 192.168.0.7.52484 > ramoth.ssh: SWE 3649070327:3649070327
(0) win 5840 <mss 1460,sackOK,timestamp 515388669 0,nop,wscale 2>
17:34:50.418878 IP 192.168.0.7.52484 > ramoth.ssh: SWE 3649070327:3649070327
(0) win 5840 <mss 1460,sackOK,timestamp 515389419 0,nop,wscale 2>

Any ideas what's wrong? 

-- 
David Lee Lambert ... Software Developer
Cell phone: +1 586-873-8813 ; alt. email <as4109 at wayne.edu> or 
<lamber45 at msu.edu>
GPG key at http://www.lmert.com/keyring.txt
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